When transferring an AR15 pistol lower to another CA resident who has an HSC, does the FFL need to go through the safe handling demonstration? If so, can the demonstration be done at the start of DROS?

The AR15 was brought into CA as a SSEand I still have the paperwork. Ideally it would be transferred with a ten round mag with a bullet button, but I do have a zero round adapter that could be installed. Would it matter?